Duplicating machine



June 22, 1937. F. M. HoUsHALTER ET AL 2,084,583

DUPLICATING MACHINE FiledAJuly 25, 1955 s sheets-sheet 1 NNMNMN June 22, 1937. F. M. HOUSHALTER ET AL 2,084,583

DUPLICATING MACHINE Filed July 25, 1955 3 Sheets-Sheet 2 June 22, 19x37. F. M. HUSHALTER ET AL 2,084,583

DUPLI GAT ING MACHINE Filed July 25, 1935 3 SheetS-Sheet 5 Patented June 22, 1937 UNITED STATES PATENT OFFIQE Aaoecsss DUPLIoATNG MACHINE Application July 25, 1935, Serial No. 33,100

14 Claims.

This invention relates to duplicating mechanism and particularly to means whereby master records made up from a plurality of separate Astrips or sheets may be assembled either side by side or in an overlapping relationship and applied to a duplicating mechanism to produce a composite copy which contains the material eX- y posed on the several strips or sheets.

It is the purpose of the present invention to l0 provide a device for assembling in parallel or overlapped relation a series of sheets or strips and positioning them during the assembly with relation to the printing bed of a duplicating machine so that they may be pressed down in contact with the duplicating band on the bed by the usual platen roller used in making copies.

It is a further purpose of this invention to provide a novel device of this character which may be readily attached to and removed from the printing bed of a duplicating machine without in any way interfering with the use of the machine with regular master sheets as may be desired.

AOther objects and advantages ofthe invention will become apparent as the following detailed description progresses, reference being had to the accompanying drawings wherein- Fig. 1 is a longitudinal sectional View through a duplicatingmachine showing the invention applied thereto;

Fig. 2 is an enlarged sectional View similar to Fig. l but illustrating the construction of the attachment more clearly;

Fig. 3 is a plan view of ailat bed duplicating machine showing the invention applied thereto;

Fig. 4 is a sectional view on the line 4-4 of Fig. 2; and

Fig. 5 is an enlarged sectional view on the line 5-5 of Fig. l.

Referring now in detail to the drawings, the in- 40 vention is shown as applied to a duplicating machine of the hectograph type having a fiat printing bed. The stand of the machine is indicated at A and on this stand is the frame B of the machine which carries a printing bed D and has suitable guide means E for guiding a carriage C.

A duplicating ban-d F is mounted on spindles G and H and passes over the printing bed D. The machine may have the usual standard margin bar M and a suitable moistening device such as indicated at R in Figs. l and 2 for maintaining the duplicating band in proper condition.

The structure so far described is well known in the art and will not be described further except in 55 so far as it is necessary to bring out the func- (C l. lOl- 133) tion of the novel features comprising the present invention.

Original or master sheets used with the present invention are preferably provided along opposite edges with spaced holes. It is sometimes desirable to Adivide up the master records into strips and reassemble certain strips taken from different masters so that the information contained in the several strips may be reproduced in one complete copy.

Preferably, in so dividing the master records, each strip should have at least two holes at each end thereof.

The present invention provides means consisting of a pair of bars or plates I il and I I which are adapted to run lengthwise of the bed plate D and be arranged in parallel relation to each other. Each of the bars Il] and II carries a number of pins I2 spaced lengthwise thereof to correspond to the spacing of the holes provided in the master records. Pins I2 may be secured to their respective bars in any suitable manner such for eX- ample as that shown in Fig. 2 where each pin is provided with a reduced shank I3 that passes through the bar an-d is spread out as indicated at I4 to securely rivet the pin to its bar.

Bars I0 and II each carry a pair of depending guide pins I5 and I6 which guide pins are adapted to pass through suitable openings provided in the printing bed D. The guide pins i5 and iii are preferably so small that the openings necessary for them do not injure the printing bed when it is used for the purpose of supporting a gelatin band wider than the distance between the bars I0 and I I.

Suitable sleeves I1 and I8 secured to a bottom plate I9 of the printing bed serve as guides for pins I5 and I6. It is to be understood that bars I0 and II may be lifted off merely by pulling them upward until the pins I5 and IB on each bar are removed from the printing bed. This leaves the printing bed free of any obstructions due to the attachment. The openings necessary for the pins do not cause any harm.

Means are provided for elevating the bars It) and II above the printing bed for the purpose of applying master sheet strips thereto so that the strips will not contact the gelatin band and get stuck to it while they are being assembled upon the bars I0 and II.

The means consist of a frame 2D and four cams 2|, 22, 23 and 24. The frame 2E! is slidably secured to a pair of channel bars Z5 and 26 which run transversely of the machine beneath the printing bed D. The frame 20 has slots 2l, 23,

29 and 30 through which suitable bolts 3l, 32, 33 and Silv extend. These bolts are clamped to the lower iianges of the angle bars 25 and 25 by suitable nuts and the bolts are provided with enlarged flat heads 35 and 35 to support the frame 2i).

It will be noted from an inspection of Figs. 2 and 4 that the rear heads 35 have hat edges facing toward the rear while the front heads 35 have flat edges facing toward the front. The heads are merely cut off in this fashion in order to provide a slightly greater clearance for screws such as 3l which hold the cam members 2i, 22, 23 and 2d to the frame 26.

Front cam members 23 and 24 are cut away as indicated at 36 in Fig. 2 so that, when the frame is in its rearmost position, they will not strike the nuts on bolts 533 and 34,

At the forward end of the machine, frame 2t has outwardly extending portions 39 and lli) which have projections il! and l2 projecting toward the front end of the machine so as to be in the clear and accessible: for an operator to grasp, These projections il and 52 are additionally supported by a pair of lugs i9 and 5@ on the side frame members of the machine, and have suitable heads or handles i3 and IM thereon. As shown best in Fig. 3, the handles @-3 and 44 lie sufficiently far enough apart to permit the use of a much wider band of gelatin than that normally used with the bars lill and Il.

As shown best in Fig. 5, the carriage C has a platen roller 45 which is cut out as indicated r at G6 so as to clear the bars iii and il (only one bar and one cut out portion are shown in Fig. 5, but it is to be understood that the same provision is made for the other bar). The bars when in lowered position are low enough to clear the carriage frame so that the carriage may be rolled over master sheet strips held by the bars I0 and Il.

The manner in which the device is operated is substantially as follows: Assuming that the operator desires to make up a composite master upon the duplicating band F, he iirst places the bar I il and bar ll in position on the opposite sides of the duplicating band by inserting their pins I5 and i6 in the apertures provided in the printing bed for this purpose. He then grasps the handles d3 and fifi and pulls them forward thus causing the cam members 2|, 22, 23 and 2d to move the pins such as l5 and It upwardly to raise bars lil and Il into the dotted line position shown in Fig. 2.

The bars it and Il in their raised positions are sufficiently spaced from the duplicating band .F that an operator can readily place a plurality of strips such as 4l and 43 upon the pins i2 without the strips contacting the surface of the gelatin band F to which they would stick owing to the tackiness of the band.v

When the strips have been assembled in their proper positions upon` the bars i@ and i i, frame 2i] is moved to the left as shown in the drawings. This movement of the frame 20 moves the cams 2l, 22, 23 and 24 so as to permit the bars it and l! to drop down upon the Vprinting bed D. Carriage C may now be brought back to home position and utilized to press the master sheet strips il and 43 down upon the gelatin band. The strips may then be removed by lifting either of the bars i0 or Il or both of them and copies may be made in the usual fashion. When it is unnecessary to have the bars I0 and l l for as-Y sembling master sheets, they may be lifted off and laid aside leaving the machine free for use of wider duplicating bands in the making of wider copies.

While certain embodiments of the invention have been shown and described, it will be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims in which it is the intention to claim all novelty inherent in the invention as broadly as permissible in view of the prior art.

The invention having thus been described what wcclaim as new and desire to secure by Letters Patent is: Y

l. In a duplicating machine having a printing bed and a duplicating band thereon, a master sheet assembling attachment for said machine comprising a pair of bars on said printing bed, said bars having spaced mounting pins thereon and means for elevating said bars above the printing bed.

2. In a duplicating machine having a printing bed and a duplicating band thereon, a master sheet assembling attachment for said ma-chine comprising a pair of bars on said printing bed,

said bars having spaced mounting pins thereon and means for elevating said bars above the printing bed, said bars being removable fromy said printing bed. Y

3. In a duplicating machine having a printing bed and a duplicating band thereon, a master sheet assembling attachment for said machine comprising a pair of bars on said printing bed, said bars having spaced mounting pins thereon and means for elevating said bars above the printing bed, said last named means comprising cam means beneath the printing bed and pins extending from said bars to the cam means.

4. In a duplicating machine having a printing bed and a duplicating band thereon, a master sheetrassembling attachment for said machine comprising a pair of bars on said printing bed, said bars having spaced mounting pins thereon and means for elevating said bars above the printing bed, said last named means comprising cam means beneath the printing bed and pins extending from said bars to the cam means, and a frame slidably mounted in the machine upon which said cam means are mounted.

5. In a duplicating machine having a printing bed and a duplicating surface thereon, a sheet assembling means for said machine comprising a pair of spaced members at opposite sides of said surface, said members having parallel rows of mounting pins thereon for mounting master record strips across said surface.

6. In a duplicating machine having a printing bed and a duplicating surface thereon, a sheet assembling means for said machine comprising a pair of spaced members at opposite sides of said surface, said members having parallel rows of mounting pins thereon for mounting master rec-y ord strips across said surface, and means for raising and lowering said means with respect to` said duplicating surface.

7. In a duplicating machine having a printing bed and a duplicating surface thereon, a sheet assembling means for said machine comprising a pair of spaced members at opposite sides of said surface, said members having parallel rows of mounting pins thereon for mounting master record strips across said surface, and means for raising and lowering said means with respect to said duplicating surface, said last named means comprising pins. passing through the printing bed for raising said members and means beneath the printing bed to move said pins up to lift said members above the printing bed.

8. In a duplicating machine having a printing bed, means to facilitate assembly of strips of master records and the like thereon comprising a pair of rows of spaced pins on which the strips may be assembled, and means mounting said rows of pins for vertical movement with respect to said printing bed.

9. In a duplicating machine having a printing bed, means to facilitate assembly of strips of master records and the like thereon comprising a pair of rows of spaced pins on which the strips may be assembled, said rows of pins being removably mounted on the bed.

10. In a duplicating machine having a printing bed, means to facilitate assembly of strips of master records and the like thereon comprising a pair of rows of spaced pins on which the strips may be assembled, means carrying said rows of i pins, said last named means being movable with respect to the printing bed to raise and lower the rows of pins with respect to the printing bed.

1l.. In a duplicating machine having a printing bed, means to facilitate assembly of strips 30 of master records and the like thereon comprising a pair of rows of spaced pins on which the strips may be assembled, and means mounting said rows of pins for vertical movement with respect to said printing bed, and cam means beneath said printing bed engaging said mounting means to raise the rows of pins.

12. In a duplicating machine having a printing bed and a duplicating band thereon, a master sheet assembling attachment for said machine comprising a pair of bars on said printing bed, said bars having spaced mounting pins thereon and means for elevating said bars above the printing bed, said last named means comprising cam means beneath the printing bed and pins extending from said bars to the cam means, and a frame slidably mounted in the machine upon which said cam means are mounted, said frame having operating means projecting beyond said printing bed at one end thereof.

13. A duplicating machine comprising a frame, a printing bed thereon, a carriage movable over said bed and having a platen roller, means carrying parallel rows of spaced pins at opposite sides of said bed, said platen roller having portions oi reduced diameter spaced to pass over said rows of pins in movement of the carriage over the printing bed, and manually operable means to elevate said rows of pins from the printing bed.

ill. A duplicating machine comprising a frame, a printing bed thereon, a carriage movable over said bed and having a platen roller, means carrying parallel rows of spaced pins at opposite sides of said bed, said platen roller having portions of reduced diameter' spaced to pass over said rows of 4pins in movement of the carriage over the printing bed, and manually operable means to elevate said rows of pins from the printing bed, said last named means including mechanism, mounted beneath the printing bed and elements passing through the printing bed to transmit movement from said mechanism to said pin carrying means.

FRED M. HOUSHALTER. FRED O. WEISMAN. 

